72580139 has 2 divisors, whose sum is σ = 72580140. Its totient is φ = 72580138.

The previous prime is 72580121. The next prime is 72580147. The reversal of 72580139 is 93108527.

It is a strong prime.

It is an emirp because it is prime and its reverse (93108527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72580139 - 2⁸ = 72579883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72580099 and 72580108.

It is not a weakly prime, because it can be changed into another prime (72580169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36290069 + 36290070.

It is an arithmetic number, because the mean of its divisors is an integer number (36290070).

Almost surely, 2^72580139 is an apocalyptic number.

72580139 is a deficient number, since it is larger than the sum of its proper divisors (1).

72580139 is an equidigital number, since it uses as much as digits as its factorization.

72580139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 72580139 is about 8519.3978073570. The cubic root of 72580139 is about 417.1311267298.

The spelling of 72580139 in words is "seventy-two million, five hundred eighty thousand, one hundred thirty-nine".